Iaivip coiistbtjction



G. E. HULSE.

.lulvnl vd July 15, 10131.

o Itiilit E. I-IULSE, OF NEWARK, NEW JERSEY, ASSIGNOR TO SAFETY CAR HEATING &

LIGHTIITG CDMIANY, A CORPORATION OF NEW JERSEY.

LAB/ P CO. STIL'UCTION.

Application filed March 28, 1916.

To (/77 7 7 it may mrrrrn l lie it known that l, (luoium l). Home, a citizen of the United Slater-r, and a resident ol Newark, in the county ol' llsse'x and State ofhi in Jersey, ha \'e invented an ,lHlPlOVU- ment in Lamp t'onstrmztiou, oi? which the following is a specification.

"lhi-a i rention re rt a to lump construction and with regard to the more specific l'eaturesthereof to supporting devices for the, parts of electric lamps. ne ol the objects thereof is'to provide prataical and secure means for supporting certain parts of lamp. Another object is to provide an electric lamp construction which will be simple, compact and inexpensive and yet, reliable inaction and convenient in manipulalion. Other objects will be in part obvious and in part pointed out hereinatler.

The invention accordingly consists in the features of construction, combinations oil elements and arrangement of parts which will be exeu'iplitled in the structure herein-- a't'ter described and the scope of the application of which will be indicated in the following claims.

The accompanying drawing is a sectional elevation of one of various possible embodiments of this invention.

cludes not only the source of light: but. associated parts, s supported upon. any suit-- able form of fixture imlieated by the threaded nipple l by means 01 a collar Ll. 'lhis collar priwided with an outer annula-r groove 1 or otherwi. nailed the upper portion -l ol. a shell or socket. casing. This easing extends downumrdly and thence outwardly to form the shoulder 53 beneath which it is of general cylindrical 'l'orm down to a portion it which has threada formed therein. As the casing; is of sheet metal and these threads are termed by a suitable shaping thereof rather than cutting its surfaces, there is provided a rounded thread upon both its inner and outer surfaces "for purposes here inartter described.

Beneath the portion (3 the casing flares outwardly as at '1", theme curves inwardly at and at it lower edge is outwardly flanged as at 9. The lower portion o'l' this easing; which is termed oti spring); brass. is slit at various points as indicated at 10 so as to provide a plurality of depending resilient Specification of Letters I'atent.

and about its surface spun Patented July 1 5, 19.15.

Serial No. 87,155.

fingers substantially of the shape shown in the drawing. These lingers are of such form that they normally tend to snap over the upper luring lip ll of the shade l2 of the lamp. Unless thes lingers are restrained, lmwever, the lamp shade may be snapped into or out ol position as the lingers readily yield to permit such action.

'lhremltal upon-the outer surface of the threaded portion (l is a clamping collar 1-4, the lower portion of which .llarcs outwardly at 1.5 and below is turned back upon ilscll at; 16 to provide an upwlu'dly converging or inner conical surface 17. The latter surl'aee coacts with the outwardly flared portions T of the spring gripping lingerrv and as the member It is turned downwardly upon its thread, it securely clamps these lingers into interlocking relation with the shade. It may here be noted that the term shade is used in a broad sense to denote any lighlrtransniitting member used in eonneetion with a source of light.

Fitted within the body portion ot the easing 3 is a socket 155 which is prel'm'ably ot' the two-part type comprising an upper member 1,! and a lower member 20 separable one from the other. These members are preferably formed of porcelain and interlock one with another as at .21. The upper menu but is prorided on its lower surface with a contact plate :32 adapted lobe engaged by the center contact of an ordinary electric bulb, and also provided with a contact 3 adapted del-achably to make electrical connection with n inlernally threaded me.- tullic sleeve zt-lsecured within the lower socket member '20. Suitable cmidurtors are led from contacts- 22 and :2?) respeclively and pass upwardly through the nipple 1 to any desired source of current. Al- .though the socket here shown is of the twopart type, certain of the 'lealures of this in veution are independent of the type .ol socket employed and it is to be understood that the term socket is broadly used to denote any device of this general nature.

The socket is held within the. matallic Fliell or casing by means of a collar or bushing 26, which may be. formed ol fiber, and is threadet'l upon its outer side to lit and eoact with the threads formed in the shell member at ti. This collar coacts with a stop shoulder 27 upon the socket member 20 and securely holds the socket in position. The

lamp bulb 28 may be of any well known form. provided with the usual contacts adapted to coact with the contacts 22 and 24: respectively of the socket.

In the use of the device, the socket is assembled in a shell or casing 3 and is securely held in position by turning upwardly within the same the collar 26 which firmly engages the shoulder 27. The lamp bulb 28 may then be inserted and removed as desired. The shade issnapped within the spring fingers with the clamping collar withdrawn upwardly and the latter is then turned downwardly upon this same threaded portion 6 of the shell and securely locks the spring fingers about the lip of the lamp shade. As the spring fingers are formed integral with the shell of the socket, the

number of requisite parts is reduced and the made of the above invention and as various in combination,,a shade, a member adapted changes might be made in the embodiment above set forth, is to be understood that all matter herein set-forth or shown in the accompanying drawing is to be interpreted as illustrative and not in a limiting sense.

I claimas my invention: 1. In construction of the class described,

to make connection with and support said shade, socket fitted within said member, If bushing threaded within said member and supporting said socket therein and a shade-locking device threaded on the outer surface of said member.

2. In construction of the class described, in combination, a socket formed of two separable parts, a member fitted about both parts of said socket, means comprising a member threaded upon the outer surface of said first member adapted to support a shade, and a locking member threaded on the inner surface thereof adapted to extend below and to secure said socket.

3. In construction of the class described, in combination, a socket formed of two separable parts, a member fitted about both parts of said socket, means comprising a member threaded upon the outer surface of said first member adapted to support a shade, anda locking member threaded on the inner surface thereof adapted to extend below and to secure'said socket, said first mem her being formed of sheet metal and bodily shaped to provide the threads with which said second and thirdmembers coact.

'4. In construction of the class described, in combination, a member having a resilient lower portion adapted to interlock with the lip of a shade, a socket formed of two sepa-- rable parts both of which are incased'by said member, said member being formed of sheet metal and having threads b'odily formed therein, a bushing coacting with the inner surfaces of said threads to support said socket in position, and a member coacting with the outer surface of said threads adapted to lock said resilient parts in interlocking position.

5. In construction of the class described,

in combination, amember having a resilient lower portion adapted to interlock with the lip of-a shade, a socket, said member being formed of sheet metal and having threads bodily formed therein, a bushing coacting with the inner surfaces of saidmthreads to ifiupport said socket in position, and a mem- "ber coacting with the outer surface of said threads adapted to lock said resilient parts in interlocking position. 1

6. In construction of the class described, in combination, a socketcomposed of two separable parts, a member formed of sheet metal for closely incasing and holding in position said two parts and provided with an outer thread and with resilient gripping fingers at its lower end, and a device threaded upon the outer surface of said member and provided with an inclined surface adapted to engage said fingers and lock them into interlocking relation with a shade.

7. In construction of the class described, in combination, a socket incasing member formed of sheet metal provided with an, outer thread and with resilient grippingfingers at its lower end, a device threaded upon the outer surface of sai .member and provided with an inclined si ace adapted to engage said. fingers and lock them in interlocking relation with a shade, a socket composed of two relatively separable parts fitted within said first member, and a threaded bushing threaded within said first member and extending below said socket and adapted to support it in position.

8. Iii construction of the class described, in combination, a socket fornied of a plurality of separable parts, a member fitted about two parts of said socket, means comprising a member threaded upon the outer surface of said first member adapted to support a shade, and a locking member threaded.

on the inner surface thereof adapted to secure said socket in position, said first member being bodily shaped to provide the threads with which said second and third members coact.

9. In construction of the class described, in combination, a member having spring fingers adapted to interlock with and hold in position a shade, a socket formed of a plurality of separable parts incased by said member, said member being formed of sheet metal and having threads bodily formed therein, a bushing coacting with said threads to support said socket in position, and a member coacting with said threads adapted to lock said resilient parts in interlocking position. i

10. In construction of the class described,

in combination, a member having a resilient lower portion adapted to interlock with the lip of a shade, a socket, said member having internal amlexternal threads, a bushing coacting with the nner threads to support said socket in position, and a member coacting with the outer threads adapted to lock said resilient parts in interlocking position.

In testimony whereof, I have signed my name to this specification this sixteenth day of March, 1916.

GEORGE E. HULSE. 

